really experienced for him.... with his own reactions... there certainly are people that dont get gyno even from high doses over extended periods.. its also true that gyno symptoms can come and go, usually because one of the other exasperating influences goes away. that is not the typical case and not typically because estrogen levels reduce.
just wait and then if you get gyno, then get surgury is not good advice, though you will find plenty of people with "experience" that give it as litany.